webpack

Runs webpack build with JSON stats output and returns structured assets, errors, and warnings.

SERVERDocker SOURCE@paretools/docker

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-dave-london-docker/webpack.md

WHAT IT DOES

What webpack does on Docker

AI agents invoke webpack to trigger actions in Docker. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why webpack is rated High

Webpack is a build tool that executes JavaScript bundling and can run arbitrary code through loaders and plugins. While the tool is scoped to returning JSON stats output, the webpack build process itself executes code and could be exploited to run unintended operations if the configuration is user-controlled or if malicious webpack plugins are present in dependencies.

From the tool's definition "Runs webpack build" indicates code execution and build pipeline invocation, which can trigger arbitrary scripts defined in webpack configuration files (entry points, loaders, plugins, custom webpack config).

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs webpack safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Docker, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For webpack, this is the rule to start with:

webpack Rate-limited

webpack stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "webpack": {
      "limits": [
        {
          "counter": "webpack_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Docker, apply this rule, and every webpack call is checked against it from then on.

FAQ

Questions about webpack

What does the webpack tool do? +

Runs webpack build with JSON stats output and returns structured assets, errors, and warnings. It is categorised as a Execute tool in the Docker MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on webpack? +

Register the Docker MCP server in PolicyLayer and add a rule for webpack: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Docker. Nothing to install.

What risk level is webpack? +

webpack is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit webpack? +

Yes. Add a rate_limit block to the webpack rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block webpack completely? +

Set action: deny in the PolicyLayer policy for webpack. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides webpack? +

webpack is provided by the Docker MCP server (@paretools/docker). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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